Larry David's painfully honest sense of humor has spawned some of the most hilarious moments in TV history. Though he's famous for writing shows "about nothing," many of the awkward gags he's orchestrated over the years also put important human issues in the spotlight.

Next month, the Seinfeld co-creator will take his unique brand of cringeworthy comedy to Broadway for the first time, acting in a play he wrote called Fish in the Dark, about a man dealing with his family following the death of his father. 

While he has always insisted that the selfish, dishonest character he played on HBO's Curb Your Enthusiasm is nothing like him, some of David's most famous truisms and observations on life suggest the two men have more than a little in common.

Here are eight of David's best quotes from over the years that offer a glimpse of the harsh but hilarious psychological insight of the distinctive, curmudgeonly genius.

On self-confidence:

"Anyone can be confident with a full head of hair. But a confident bald man--there's your diamond in the rough."

On humor:

"I think we're all good and bad, but good's not funny. Bad is funny. Suppress the good and let the bad out, and then you can be funny."

On scaling:

"I don't take on big things. What I do, pretty much, is make the big things small and the small things big."

On success:

"When you're not concerned with succeeding, you can work with complete freedom."

On customer service:

"An employee is told that the customer is always right and, in fact, the customer is usually a moron and an asshole."

On sales:

"Anything that's for free, people will take. They don't discriminate."

On preparation:

"There are times when I'm driving home after a day's shooting, thinking to myself, 'That scene would've been so much better if I had written it out.'"

On doubting yourself:

"I have reservations about everything I do."

Have a favorite Larry David quote you'd like to share? Tell us in the comments below.